Coherent Corp. has now survived earnings, a 44% weekly surge, a 14% reversal, and two consecutive post-earnings prints — and the short book keeps growing, even as analysts respond to the results by lifting targets aggressively.
The positioning story has shifted meaningfully since last week's notes. Short interest reached 7.83% of free float as of August 14 — 12.3 million shares on loan — up 32% on the week and 40% over the past month. That is the highest reading in the entire 90-day window this series has tracked, eclipsing the previous peak of 6.46% flagged in the August 12 trader note. The week's move is the most aggressive yet: bears who survived the 44% squeeze, the 14% reversal, and a muted earnings reaction are still pressing. The stock itself closed Friday at $325.83, down 14% on the week — which means shorts are finally in the money in a meaningful way for the first time since mid-July. The borrow market remains wide open. Availability has tightened sharply from the extraordinary readings of late July (above 3,200%) but still registers at 839% — roughly eight shares available to borrow for every one currently lent out. Cost to borrow is just 0.46%, barely changed on the week. No mechanical constraint on the short book exists.
Options positioning adds a different texture to the bearish lean. The put/call ratio at 1.25 sits almost exactly in line with its 20-day average of 1.26, with a z-score near zero — meaning options traders are defensively positioned, but not unusually so relative to the recent norm. That norm itself has reset higher since mid-July, when the PCR was running closer to 1.10-1.17. The persistent elevation in puts-relative-to-calls over the past three weeks suggests hedging has become structural rather than event-driven. It also means there is no options-market catalyst pointing toward a near-term squeeze.
What makes this week's setup genuinely interesting is the direct contradiction between the short book and the analyst community. A cluster of upgrades landed on August 13 — the day after the second earnings print — with five firms raising targets simultaneously. Jefferies lifted to $420 from $375, Needham to $420 from $380, and Rosenblatt to $500 from $425, all maintaining Buy ratings. Morgan Stanley raised to $375 from $330 at Equal-Weight — a more cautious read. The consensus mean target now sits at $410.76, roughly 26% above Friday's close. That gap between where analysts think the stock is worth and where the short book is positioned is the central tension: bulls see a 26% return to fair value, bears have just pushed to a fresh short-interest record. The bull case rests on AI data-center demand for transceiver and optoelectronic components; the bear case points to US-China tariff exposure, reliance on volatile semiconductor capex cycles, and controversy around supplier Innolight. EPS momentum scores rank in the 98th percentile over both 30 and 90 days — the forward estimate revision cycle has been strongly positive — but the EV/EBITDA multiple at 18.4x and P/E at 26.8x leave limited margin for error on delivery.
Institutional ownership gives modest context on the macro flows. BlackRock added 1.66 million shares as of July 31, FMR (Fidelity) added 719,000, and State Street added 843,000 — all recent additions from the three largest passive and active holders. One notable entry: GPU Ventures reported a fresh position of 7.79 million shares (nearly 4% of outstanding) as of March 31, a stake that did not appear in prior periods. On the insider side, the 90-day net has been entirely one-directional: CEO Jim Anderson sold 25,836 shares in early June at $426.89, and CFO Sherri Luther sold in both April and July. Net insider sales over 90 days total approximately $13.7 million. No insider has bought. The direction is consistent — insiders are reducing exposure into strength — though the significance scores on each trade were low, suggesting routine plan sales rather than a strategic signal.
Closest peer FN gained 1.4% on the week while GLW was flat. JBL added 6.4%. None of the correlated names experienced anything close to Coherent's 14% weekly drawdown, which reinforces that last week's move was stock-specific rather than a sector rotation. With no next earnings date yet in the system, the watch is on whether this record short interest — the largest in the tracked window, held by bears who have now navigated a 44% squeeze and two earnings prints without retreating — finally finds a catalyst to cover, or whether the analyst-driven narrative around AI-optics demand begins to attract fresh long-side conviction at current prices.
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